CDMA20001x系统同步信道物理帧长度是() ["20ms","40ms","26.67ms","80ms"]
飞机的最大全重为(). ["飞机空重加上机组,最大燃油,货物,行李","飞机空重加上机组,乘客,固定设备","空重加上实用装载","空重加上机组和固定设备"]
CDMA20001x系统区分扇区的最小PN偏移量是() ["A.8chip","B.16chip","C.32chip","D.64chip"]
CDMA20001x系统短PN序列的循环周期是() ["A.20ms","B.40ms","C.80\/3ms","D.80ms"]
机的实用装载包括(). ["机组,燃油,乘客,货物","机组,燃油,滑油,固定设备","机组,燃油,乘客,货物,滑油,固定设备","机组,动力装置,燃油,乘客,货物,滑油"]
热的传递方式有()三种,平常情况下,上述三种方式同时存在。